TX_HANDLER_CHECK_FOR_DB_COMMIT is a standard SAP function module that performs Check for DB_COMMIT trigered by application functionality. This is available within standard R/3 SAP systems depending on version and release level.
Below are the pattern details for this FM showing its interface including any import, export and tables parameters. There is also a list of Exceptions and for your convenience any standard documentation available. All this information and more can also be viewed if you enter the function module name TX_HANDLER_CHECK_FOR_DB_COMMIT into the relevant SAP transaction such as SE37 or SE80.
CALL FUNCTION 'TX_HANDLER_CHECK_FOR_DB_COMMIT' "Check for DB_COMMIT trigered by application
. " TX_HANDLER_CHECK_FOR_DB_COMMIT